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          <h1 class="post-title" itemprop="name headline">Activiti工作流</h1>
        

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        <h2 id="一-核心接口"><a href="#一-核心接口" class="headerlink" title="一.核心接口"></a>一.核心接口</h2><h3 id="1-ProcessEngine-流程引擎"><a href="#1-ProcessEngine-流程引擎" class="headerlink" title="1.ProcessEngine 流程引擎"></a>1.ProcessEngine 流程引擎</h3><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment">*流程引擎 核心接口</span></span><br><span class="line"><span class="comment">*public class ProcessEngineImpl implements ProcessEngine  该类为线程安全类</span></span><br><span class="line"><span class="comment">*/</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">ProcessEngine</span> </span>&#123;</span><br><span class="line">    .......</span><br><span class="line">  <span class="function">RepositoryService <span class="title">getRepositoryService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">RuntimeService <span class="title">getRuntimeService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">FormService <span class="title">getFormService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">TaskService <span class="title">getTaskService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">HistoryService <span class="title">getHistoryService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">IdentityService <span class="title">getIdentityService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">ManagementService <span class="title">getManagementService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">DynamicBpmnService <span class="title">getDynamicBpmnService</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">ProcessEngineConfiguration <span class="title">getProcessEngineConfiguration</span><span class="params">()</span></span>;</span><br><span class="line">  <span class="function">FormRepositoryService <span class="title">getFormEngineRepositoryService</span><span class="params">()</span></span>;</span><br><span class="line">  org.activiti.form.api.<span class="function">FormService <span class="title">getFormEngineFormService</span><span class="params">()</span></span>;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<blockquote>
<p>常用接口</p>
</blockquote>
<h3 id="2-RepositoryService-存储服务"><a href="#2-RepositoryService-存储服务" class="headerlink" title="2.RepositoryService 存储服务"></a>2.RepositoryService 存储服务</h3><blockquote>
<p>主要负责工作流的存储相关操作，包括部署 删除等</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">RepositoryService</span> </span>&#123;</span><br><span class="line"></span><br><span class="line"><span class="comment">//创建部署</span></span><br><span class="line"> <span class="function">DeploymentBuilder <span class="title">createDeployment</span><span class="params">()</span></span>;</span><br><span class="line"><span class="comment">//流程定义查询</span></span><br><span class="line">  <span class="function">ProcessDefinitionQuery <span class="title">createProcessDefinitionQuery</span><span class="params">()</span></span>;</span><br><span class="line"><span class="comment">//部署查询</span></span><br><span class="line"><span class="function">DeploymentQuery <span class="title">createDeploymentQuery</span><span class="params">()</span></span>;</span><br><span class="line"><span class="comment">//暂停流程</span></span><br><span class="line"><span class="function"><span class="keyword">void</span> <span class="title">suspendProcessDefinitionById</span><span class="params">(String processDefinitionId)</span></span>;</span><br><span class="line"><span class="comment">//启用流程</span></span><br><span class="line"> <span class="function"><span class="keyword">void</span> <span class="title">activateProcessDefinitionById</span><span class="params">(String processDefinitionId)</span></span>;</span><br><span class="line"> ......</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="3-RuntimeService-运行服务"><a href="#3-RuntimeService-运行服务" class="headerlink" title="3.RuntimeService 运行服务"></a>3.RuntimeService 运行服务</h3><blockquote>
<p>主要负责通过流程定义启动一个流程实例 包括启动 终止流程实例等操作</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">RuntimeService</span> </span>&#123;</span><br><span class="line"><span class="comment">//通过流程定义启动一个流程 返回一个流程实例</span></span><br><span class="line"> <span class="function">ProcessInstance <span class="title">startProcessInstanceById</span><span class="params">(String processDefinitionId)</span></span>;</span><br><span class="line"><span class="comment">// 使用流程实例id  删除一个正在进行中的流程</span></span><br><span class="line"> <span class="function"><span class="keyword">void</span> <span class="title">deleteProcessInstance</span><span class="params">(String processInstanceId, String deleteReason<span class="comment">/*删除原因*/</span>)</span></span>;</span><br><span class="line"><span class="comment">//创建流程实例查询对象</span></span><br><span class="line"><span class="function">ProcessInstanceQuery <span class="title">createProcessInstanceQuery</span><span class="params">()</span></span>;</span><br><span class="line">......</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="4-TaskService-任务服务"><a href="#4-TaskService-任务服务" class="headerlink" title="4.TaskService 任务服务"></a>4.TaskService 任务服务</h3><blockquote>
<p>主要负责流程中的每一个任务的操作 ，包括 任务查询 ，任务指定受理人，任务拾取 归还，  完成任务 等操作 </p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">TaskService</span> </span>&#123;</span><br><span class="line"><span class="comment">//删除任务</span></span><br><span class="line"> <span class="function"><span class="keyword">void</span> <span class="title">deleteTask</span><span class="params">(String taskId, String deleteReason)</span></span>;</span><br><span class="line"><span class="comment">//指定用户拾取该任务 不同于 setAssignee(String, String) 直接指定  这里会在有受理人的情况下进行校验</span></span><br><span class="line"><span class="function"><span class="keyword">void</span> <span class="title">claim</span><span class="params">(String taskId, String userId)</span></span>;</span><br><span class="line"><span class="comment">//指定任务为无人拾取</span></span><br><span class="line">  <span class="function"><span class="keyword">void</span> <span class="title">unclaim</span><span class="params">(String taskId)</span></span>;</span><br><span class="line"><span class="comment">//完成一个任务</span></span><br><span class="line"><span class="function"><span class="keyword">void</span> <span class="title">complete</span><span class="params">(String taskId)</span></span>;</span><br><span class="line">......</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="5-HistoryService-历史服务"><a href="#5-HistoryService-历史服务" class="headerlink" title="5.HistoryService 历史服务"></a>5.HistoryService 历史服务</h3><blockquote>
<p>主要负责历史流程 任务的查询等操作</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">HistoryService</span> </span>&#123;</span><br><span class="line"><span class="comment">//历史完成流程查询</span></span><br><span class="line"><span class="function">HistoricProcessInstanceQuery <span class="title">createHistoricProcessInstanceQuery</span><span class="params">()</span></span>;</span><br><span class="line"><span class="comment">//历史任务查询</span></span><br><span class="line"><span class="function">HistoricTaskInstanceQuery <span class="title">createHistoricTaskInstanceQuery</span><span class="params">()</span></span>;</span><br><span class="line"><span class="comment">//删除历史任务</span></span><br><span class="line">  <span class="function"><span class="keyword">void</span> <span class="title">deleteHistoricTaskInstance</span><span class="params">(String taskId)</span></span>;</span><br><span class="line"><span class="comment">//删除历史流程</span></span><br><span class="line">  <span class="function"><span class="keyword">void</span> <span class="title">deleteHistoricProcessInstance</span><span class="params">(String processInstanceId)</span></span>;</span><br><span class="line">......</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<hr>
<blockquote>
<p>*NOTE 还有其他接口在ProcessEngine下面</p>
</blockquote>
<h3 id="流程配置ProcessEngineConfiguration"><a href="#流程配置ProcessEngineConfiguration" class="headerlink" title="流程配置ProcessEngineConfiguration"></a>流程配置ProcessEngineConfiguration</h3><blockquote>
<p>看名字就知道该类为流程引擎的一个配置类，其中包括各个服务接口的创建，创建数据库表的配置包括DB_SCHEMA_UPDATE_FALSE，DB_SCHEMA_UPDATE_TRUE，DB_SCHEMA_UPDATE_CREATE_DROP 数据源配置等 ,在和spring一起使用是在依赖了activiti-spring时 会使用SpringProcessEngineConfiguration类作为实现,流程引擎processengine的创建会通过buildProcessEngine()方法进行创建。</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">  <span class="comment">/**不更新*/</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">final</span> String DB_SCHEMA_UPDATE_FALSE = <span class="string">"false"</span>;=</span><br><span class="line"><span class="comment">/**跟随流程引擎启动创建 流程引擎销毁时删除*/</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">final</span> String DB_SCHEMA_UPDATE_CREATE_DROP = <span class="string">"create-drop"</span>;</span><br><span class="line"><span class="comment">/** 更新*/</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">final</span> String DB_SCHEMA_UPDATE_TRUE = <span class="string">"true"</span>;</span><br></pre></td></tr></table></figure>

<h2 id="二-使用"><a href="#二-使用" class="headerlink" title="二.使用"></a>二.使用</h2><blockquote>
<p>activiti使用需要部署流程图 ，该流程图规定为一个bmpn文件，eclipse可安装绘制流程图的工具。 如下图安装即可 。 会在创建文件处有创建activiti的选项。</p>
</blockquote>
<p>Name: Activiti BPMN 2.0 designer<br>Location：<a href="http://activiti.org/designer/update/" target="_blank" rel="noopener">http://activiti.org/designer/update/</a></p>
<p><img src="/2020/10/14/2020-10-14-Activiti工作流/Activitidesigner.png" alt="Activitidesigner"><br><img src="/2020/10/14/2020-10-14-Activiti工作流/eclipseactiviti.png" alt="eclipseactiviti"></p>
<h3 id="1-绘制流程图"><a href="#1-绘制流程图" class="headerlink" title="1.绘制流程图"></a>1.绘制流程图</h3><blockquote>
<p>从右侧拖入控件，填写需要的uel表达式 ，保存就好了。保存好的bmpn文件用于部署使用 ，其实质上是一个xml文件，其中包括各种控件的信息 位置等数据。</p>
</blockquote>
<p><img src="/2020/10/14/2020-10-14-Activiti工作流/Screenshot2020-10-14165951.png" alt="图一"></p>
<p><img src="/2020/10/14/2020-10-14-Activiti工作流/Screenshot2020-10-14170334.png" alt="图二"></p>
<p><img src="/2020/10/14/2020-10-14-Activiti工作流/Screenshot2020-10-14170441.png" alt="图三"></p>
<blockquote>
<p>*NOTE: uel表达式受理人只能指定一个 ，在候选人和候选人组 可以设置多个 使用逗号隔开 例如：传入的内容时 user1,user2,user3,…. 这样的</p>
</blockquote>
<blockquote>
<p>在流程图中直接指定办理人的方式十分的不灵活，所以多数会使用uel表达式或者监听器方式为任务指定受理人。任务完成主要通过任务id即可完成，那么我们则需要使用受理人 候选人 ，或者候选人组拾取任务的方式，使用确定的受理人来查询任务获取任务id，以确定完成的任务是有受理人的。</p>
</blockquote>
<h3 id="2-uel指定受理人"><a href="#2-uel指定受理人" class="headerlink" title="2.uel指定受理人"></a>2.uel指定受理人</h3><p>如图 ，指定了uel表达式 assignee1  假设传入用户A为该任务的受理人 ，那么我们则需要使用A来获取该任务id 再完成任务。<br><img src="/2020/10/14/2020-10-14-Activiti工作流/Screenshot2020-10-14170334.png" alt="图四"></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//启动流程时传入参数 指定assignee1 是A</span></span><br><span class="line">Map&lt;String,Object&gt; variables=<span class="keyword">new</span> HashMap&lt;String ,Object&gt;();</span><br><span class="line"><span class="keyword">var</span>.put(<span class="string">"assignee1"</span>, <span class="string">"A"</span>);</span><br><span class="line"><span class="keyword">var</span>.put(<span class="string">"candidateusers"</span>, <span class="string">"candidateuser1,candidateuser2"</span>);</span><br><span class="line"><span class="keyword">var</span>.put(<span class="string">"candidategroups"</span>, <span class="string">"Mycandidategroup"</span>);</span><br><span class="line">ProcessInstance processInstance= runtimeService.startProcessInstanceById(<span class="string">"ProcessDefinitionid"</span>,variables);</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment">///////////////////////////////////////////</span></span><br><span class="line"><span class="comment">// 指定受理人查询 li例如A</span></span><br><span class="line">		Task task = taskService.createTaskQuery().processInstanceId(processInstanceId).taskAssignee(user) </span><br><span class="line">				.singleResult();</span><br><span class="line">		<span class="keyword">if</span> (task == <span class="keyword">null</span>) &#123;</span><br><span class="line">			<span class="comment">// 指定候选人查询 candidateuser1和candidateuser2都可以查到该任务</span></span><br><span class="line">			task = taskService.createTaskQuery().processInstanceId(processInstanceId).taskCandidateUser(user)</span><br><span class="line">					.singleResult();</span><br><span class="line">			<span class="keyword">if</span> (task == <span class="keyword">null</span>) &#123;</span><br><span class="line">				<span class="comment">// 指定候选人组查询 Mycandidategroup 通过组获取任务</span></span><br><span class="line">				task = taskService.createTaskQuery().processInstanceId(processInstanceId).taskCandidateGroup(group)</span><br><span class="line">						.singleResult();</span><br><span class="line">			&#125;</span><br><span class="line">			<span class="keyword">if</span> (task != <span class="keyword">null</span>)</span><br><span class="line">				<span class="comment">//任务拾取 需要任务拾取 ，即指定明确的受理人</span></span><br><span class="line">				taskService.claim(task.getId(), user);</span><br><span class="line">		&#125;</span><br><span class="line"></span><br><span class="line">		<span class="keyword">if</span> (task == <span class="keyword">null</span>) &#123;</span><br><span class="line">			<span class="keyword">return</span>;</span><br><span class="line">		&#125;</span><br><span class="line">		taskService.complete(task.getId(), map);</span><br></pre></td></tr></table></figure>

<h3 id="3-监听器方式指定受理人"><a href="#3-监听器方式指定受理人" class="headerlink" title="3.监听器方式指定受理人"></a>3.监听器方式指定受理人</h3><blockquote>
<p>创建一个流程，在这个流程中为其中一个任务添加一个监听器，指定该监听器是在任务创建时候触发，如图，我们启动流程，这里是在流程启动后直接常见后续的任务，所以可以，该监听器被触发，为该任务设定指定的受理人用户A。后续即可通过该受理人找到该任务并完成 ，当然，不止可以添加受理人，删除 添加候选人 候选人组 以及向流程中添加变量都是可以的。</p>
</blockquote>
<p><img src="/2020/10/14/2020-10-14-Activiti工作流/Screenshot2020-10-15105820.png" alt="图四"></p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">MyTaskListener</span> <span class="keyword">implements</span> <span class="title">TaskListener</span></span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Override</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">notify</span><span class="params">(DelegateTask delegateTask)</span> </span>&#123;</span><br><span class="line">		</span><br><span class="line">		delegateTask.setAssignee(<span class="string">"A"</span>);</span><br><span class="line">	&#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
      
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                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  

  
  

  

  

  

</body>
</html>
